JP2013257269A - Display device, head-up display, control method, program, and storage medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device capable of displaying a route different from a route being guided without complexity in display.SOLUTION: A display device displays a guide route to a destination, and has display means and display control means. The display control means displays a plurality of guide routes to the destination on the display means. At this time, the display control means displays one of the plurality of guide routes as a recommended route on the display means, and displays, at the same time, another guide route in a less conspicuous form than that of the recommended route on the display means.

Description

  The present invention relates to a route guidance display technique.

  Conventionally, there is a technique for displaying a plurality of routes simultaneously on a map screen. For example, Patent Document 1 describes a navigation device that displays the entirety of a plurality of routes to a destination on a map screen. The navigation device displays a schematic diagram in which the amount of information such as narrow streets, facility marks, icons, and the like is reduced when displaying all of a plurality of routes.

JP 2010-281951 A

  When it is expected that a certain intersection or road of the route being guided will take a long time due to traffic lights or traffic congestion, and you want to bypass the above-mentioned intersection etc. via the road that branches off from the route being guided There is. In this case, the navigation device needs to display a route different from the route being guided without complicating the display. On the other hand, in the navigation device described in Patent Document 1, since the entire route is displayed, the scale of the map is limited, and the display is complicated.

  The present invention has been made to solve the above-described problems, and provides a display device that can display a route different from the route being guided without complicating the display. Is the main purpose.

  The invention according to claim 1 is a display device that displays a guide route to a destination, and a display unit that displays a map, and a display control that displays a plurality of guide routes to the destination on the display unit. And the display control means causes the display means to display one of the plurality of guide routes as a recommended route, and at the same time, displays the other guide routes in a form that is less conspicuous than the recommended route. It is characterized by being displayed on the means.

  The invention according to claim 8 is an optical member that allows a user to recognize a virtual image by reflected light, a light source that emits light for forming the virtual image to the optical member, and a plurality of guides to a destination. Display control means for causing the light source to emit light for forming a virtual image for displaying a route superimposed on the front landscape, wherein the display control means displays one of the plurality of guide routes in the display The display means displays the recommended route at the same time, and the other guide route is displayed on the display unit in a form that is less conspicuous than the recommended route.

  The invention according to claim 9 is a display device for displaying a guidance route to a destination, wherein the display means displays an image generated by a camera that captures a forward landscape of the moving body, and a plurality of the routes to the destination. Display control means for superimposing and displaying the guide route on the display means, and the display control means simultaneously displays one of the plurality of guide routes as a recommended route on the display means. The other display route is displayed on the display means in a form that is less conspicuous than the recommended route.

  The invention according to claim 10 is a control method executed by a display device having display means for displaying a map and displaying a guide route to a destination, wherein the plurality of guide routes to the destination are A display control step of displaying on the display means, wherein the display control step causes one of the plurality of guide routes to be displayed as a recommended route on the display means, and at the same time, another guide route from the recommended route. It is displayed on the display means in an inconspicuous form.

  The invention according to claim 11 is a program executed by a display device that has display means for displaying a map and displays a guide route to a destination, and displays a plurality of guide routes to the destination. The display device functions as display control means to be displayed on the means, and the display control means causes the display means to display one of the plurality of guide routes as a recommended route, and at the same time, displays another guide route. It is displayed on the display means in a form that is less conspicuous than the recommended route.

1 shows a schematic configuration of a navigation device. The display screen of the display at the time of route guidance is shown. The display screen of the display when the vehicle turns right according to the detour route is shown. The 1st example of a display screen concerning the modification 1 is shown. The 2nd example of a display screen concerning modification 1 is shown. The example of a display screen concerning the modification 3 is shown. 1 shows a schematic configuration of a head-up display. The example of a display of a head-up display at the time of observing from a driver's seat is shown. The screen of the display which displayed the front scenery image is shown.

  According to a preferred embodiment of the present invention, there is provided a display device for displaying a guidance route to a destination, the display means for displaying a map, and the display means for displaying a plurality of guidance routes to the destination. Display control means, wherein the display control means displays one of the plurality of guide routes as a recommended route on the display means, and at the same time, other guide routes are less conspicuous than the recommended route. Display on the display means.

  The display device displays a guidance route to a destination, and includes a display unit and a display control unit. The display control means displays a plurality of guide routes to the destination on the display means. At this time, the display control means causes one of the plurality of guide routes to be displayed on the display means as a recommended route, and at the same time, causes other guide routes to be displayed on the display means in a form that is less conspicuous than the recommended route. According to this aspect, the display device allows the user to clearly see the recommended route, and allows the user to visually recognize routes other than the recommended route. Therefore, when an intersection or road on the recommended route is expected to take a long time due to waiting for traffic lights or traffic jams, the user preferably selects a detour route for the intersection or road and waits for traffic lights or traffic jams. Can be avoided.

  In one aspect of the display device, the display control unit causes the display unit to display another guide route branched from the recommended route by a predetermined length from the branch point. By doing in this way, a display device can make a user recognize suitably existence of other guidance routes branched from a recommendation route, suppressing display becoming complicated.

  In another aspect of the display device, the display control unit causes the display unit to display the other guidance route as a new recommended route when the mobile object to be guided enters the other guidance route. At the same time, stop displaying the recommended route. According to this aspect, when the moving body enters the other guidance route from the recommended route according to the display, the display device can make the driver clearly recognize the other guidance route as a route to be traveled.

  In another aspect of the display device, the display control unit causes the display unit to display only other guidance routes that branch from the recommended route at an intersection where a traffic signal exists, among the other guidance routes. With this aspect, the display device is preferably switched to another guidance route in the case of a signal state where it is impossible to pass along the recommended route and the other guidance route is allowed to pass at the intersection while suppressing the display from becoming complicated. It is possible to avoid waiting for a signal by guiding.

  In another aspect of the above display device, the display control means is based on a link cost related to at least one of a fee, a distance, a road width, a fuel consumption, or a required time, and is a sum value for each guide route of the link cost. A guide route in which a certain total cost is within a predetermined difference is displayed on the display means. According to this aspect, the display device can suitably notify only the other guidance route equivalent to the recommended route to the driver, and the arrival time may be delayed due to switching to another guidance route, etc. Can be suppressed.

  In another aspect of the display device, the display device further includes a signal state detection unit that detects a state of a traffic signal ahead, and the display control unit is capable of proceeding according to the state of the traffic signal among the other guide routes. Highlight the guidance route for. According to this aspect, the display device can make the driver positively recognize the advancing guide route, and can improve convenience.

  In another aspect of the display device, the display control unit causes the display unit to display only another guidance route that branches off at the intersection of the recommended route that is closest to the vehicle position among the other guidance routes. According to this aspect, the display device can prevent the display of other guidance routes that are not necessary for the most recent driving, and can more reliably suppress display complications.

  According to another preferred embodiment of the present invention, the head-up display includes an optical member that allows a user to recognize a virtual image with reflected light, and a light source that emits light for forming the virtual image to the optical member. And a display control means for emitting light for forming a virtual image for displaying a plurality of guide routes to a destination superimposed on a front landscape, and the display control means includes the plurality of guides. One of the routes is displayed as a recommended route on the display unit, and at the same time, another guide route is displayed on the display unit in a form that is less conspicuous than the recommended route. According to this aspect, the head-up display makes it possible for the user to clearly see the recommended route, and also allows the user to visually recognize a route other than the recommended route, thereby avoiding waiting for a signal or the like.

  According to another preferred embodiment of the present invention, there is provided a display device for displaying a guidance route to a destination, the display means for displaying an image generated by a camera that captures a landscape in front of a moving object, and the purpose Display control means for superimposing and displaying a plurality of guide routes to the ground on the image on the display means, and the display control means uses one of the plurality of guide routes as a recommended route for the display means. At the same time, other guidance routes are displayed on the display means in a form that is less conspicuous than the recommended route. As described above, the display device allows the user to clearly see the recommended route even when performing route guidance based on a so-called live-action image, and allows the user to visually recognize a route other than the recommended route, and waits for a signal. Etc. can be avoided.

According to another preferred embodiment of the present invention, there is provided a control method executed by a display device that has a display means for displaying a map and displays a guide route to a destination. A display control step of displaying a guide route on the display means, wherein the display control step causes the display means to display one of the plurality of guide routes as a recommended route, and at the same time, displays another guide route. Display on the display means in a form that is less conspicuous than the recommended route. By executing this control method, the display device allows the user to clearly see the recommended route and also allows the user to visually recognize the route other than the recommended route so as to avoid waiting for a signal.
According to another preferred embodiment of the present invention, there is provided a program executed by a display device that has display means for displaying a map and displays a guidance route to a destination, and includes a plurality of guidance to the destination. The display device functions as display control means for displaying a route on the display means, and the display control means causes the display means to display one of the plurality of guide routes as a recommended route, The guide route is displayed on the display means in a form that is less conspicuous than the recommended route. By executing this program, the display device allows the user to clearly see the recommended route, and allows the user to visually recognize routes other than the recommended route, thereby avoiding waiting for a signal or the like. Preferably, the above-described program is stored in a storage medium.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

[Schematic configuration]
FIG. 1 shows a schematic configuration of the navigation apparatus 1. The navigation device 1 is, for example, a stationary navigation device or a portable terminal that performs route guidance. As shown in FIG. 1, the navigation device 1 is a self-supporting positioning device 10, a GPS receiver 18, a system controller 20, a disk drive 31, and a data storage unit. 36, a communication interface 37, a communication device 38, a display unit 40, an audio output unit 50, and an input device 60.

  The autonomous positioning device 10 includes an acceleration sensor 11, an angular velocity sensor 12, and a distance sensor 13. The acceleration sensor 11 is made of, for example, a piezoelectric element, detects vehicle acceleration, and outputs acceleration data. The angular velocity sensor 12 is composed of, for example, a vibrating gyroscope, detects the angular velocity of the vehicle when the direction of the vehicle is changed, and outputs angular velocity data and relative azimuth data. The distance sensor 13 measures a vehicle speed pulse composed of a pulse signal generated with the rotation of the vehicle wheel.

  The GPS receiver 18 receives radio waves 19 carrying downlink data including positioning data from a plurality of GPS satellites. The positioning data is used to detect the absolute position of the vehicle from latitude and longitude information.

  The system controller 20 includes an interface 21, a CPU (Central Processing Unit) 22, a ROM (Read Only Memory) 23, and a RAM (Random Access Memory) 24. By executing a control program stored in the ROM 23 or the like, The entire navigation device 1 is controlled.

  For example, when the destination is set by the input device 60, the system controller 20 searches for a route to the destination using the current location detected by the GPS receiver 18 as a departure location. At this time, the system controller 20 uses a link cost that is an index of the ease of passage of each road on the route. Specifically, the system controller 20 adds the link cost (“total cost”) corresponding to each road on the route out of the route candidates from the departure point to the destination that satisfy the conditions specified by the user. Search for the route that minimizes. At this time, the system controller 20 determines, for each target road, a cost related to the time passing through the road, a cost related to the distance of the link, a cost related to a charge such as a toll road, a cost related to fuel consumption, a road such as a main road and a vehicle width. A link cost is calculated by multiplying each cost such as a cost related to the type by a predetermined ratio. Note that when route search conditions such as time priority and distance priority are defined, the system controller 20 sets the ratio of multiplying the cost of the item for which priority is specified to a large value, and then sets the link cost. calculate.

  The interface 21 performs an interface operation with the acceleration sensor 11, the angular velocity sensor 12, the distance sensor 13, and the GPS receiver 18. From these, vehicle speed pulses, acceleration data, relative azimuth data, angular velocity data, GPS positioning data, absolute azimuth data, and the like are input to the system controller 20. The CPU 22 controls the entire system controller 20. The ROM 23 includes a nonvolatile memory (not shown) in which a control program for controlling the system controller 20 is stored. The RAM 24 stores various data such as route data preset by the user via the input device 60 so as to be readable, and provides a working area to the CPU 22.

  A system controller 20, a disk drive 31 such as a CD-ROM drive or a DVD-ROM drive, a data storage unit 36, a communication interface 37, a display unit 40, an audio output unit 50, and an input device 60 are mutually connected via a bus line 30. It is connected to the.

  The disk drive 31 reads and outputs content data such as music data and video data from a disk 33 such as a CD or DVD under the control of the system controller 20. The disk drive 31 may be either a CD-ROM drive or a DVD-ROM drive, or may be a CD and DVD compatible drive.

  The data storage unit 36 is configured by, for example, an HDD and stores various data used for navigation processing such as map data. The map data includes road data represented by links corresponding to roads and nodes corresponding to road connecting portions (intersections), facility information about each facility, and the like. The map data stores information for specifying the position of each traffic light.

  The communication device 38 includes, for example, an FM tuner, a beacon receiver, a mobile phone, a dedicated communication card, and the like, and via a communication interface 37, traffic jams distributed from a VICS (registered trademark, Vehicle Information Communication System) center Receive road traffic information such as traffic information and other information.

  The display unit 40 displays various display data on a display device such as a display under the control of the system controller 20. Specifically, the system controller 20 reads map data from the data storage unit 36. The display unit 40 displays the map data read from the data storage unit 36 by the system controller 20 on the display screen. The display unit 40 includes a graphic controller 41 that controls the entire display unit 40 based on control data sent from the CPU 22 via the bus line 30 and a memory such as a VRAM (Video RAM), and can display image information that can be displayed immediately. A buffer memory 42 that temporarily stores, a display control unit 43 that controls display of a display 44 such as a liquid crystal display or a CRT (Cathode Ray Tube) based on image data output from the graphic controller 41, and a display 44 are provided. . The display 44 functions as an image display unit, and includes, for example, a liquid crystal display device having a diagonal size of about 5 to 10 inches and is mounted near the front panel in the vehicle.

  The audio output unit 50 performs D / A (Digital to Analog) conversion of audio digital data sent from the CD-ROM drive 31, DVD-ROM 32, RAM 24, or the like via the bus line 30 under the control of the system controller 20. A D / A converter 51 to perform, an amplifier (AMP) 52 that amplifies the audio analog signal output from the D / A converter 51, and a speaker 53 that converts the amplified audio analog signal into sound and outputs the sound into the vehicle. It is prepared for.

  The input device 60 includes keys, switches, buttons, a remote controller, a voice input device, and the like for inputting various commands and data. The input device 60 is disposed around the front panel and the display 44 of the main body of the in-vehicle electronic system mounted in the vehicle. When the display 44 is a touch panel system, the touch panel provided on the display screen of the display 44 also functions as the input device 60.

[Control method]
Next, a display control method for the display 44 executed by the system controller 20 will be described. Schematically, the system controller 20 displays a route to be guided (also referred to as “recommended route RR”) at the time of route guidance, and another route to a destination having a total cost equivalent to the recommended route RR. (Also referred to as “detour route RA”) is displayed in a manner that is less conspicuous than the recommended route RR. As a result, the system controller 20 allows the driver to easily grasp the detour route RA while suppressing the display from becoming complicated.

  In the following, first, the display mode of the display 44 based on the above-described display control will be described, and then a specific method for determining the detour route RA will be described.

(1) Display mode First, the display mode of the display 44 based on a present Example is demonstrated concretely with reference to FIG.2 and FIG.3. 2 and 3, the display range of the map displayed on the display 44 is assumed to be fixed for convenience of explanation.

  FIG. 2 shows a display screen of the display 44 at the time of route guidance. In FIG. 2, the own vehicle position mark 70 indicates the current location of the vehicle guided by the navigation device 1, and the traffic light mark 71 indicates a traffic light having an arrow signal dedicated to a right turn provided at the intersection of the road 81 and the road 84. The destination mark 72 indicates a destination for route guidance existing along the road 82.

  As shown in FIG. 2, the system controller 20 displays a recommended route RR to the destination on a road 81 and a road 82 by a thick line 73. Here, the recommended route RR indicated by the thick line 73 is a route that goes straight at the intersection where the traffic light indicated by the traffic light mark 71 is present and then turns right at the intersection between the road 81 and the road 82. Note that the recommended route RR indicated by the thick line 73 is the route with the lowest total cost calculated by the system controller 20 among the possible routes from the current location to the destination.

  In addition to the thick line 73 indicating the recommended route RR, the system controller 20 displays the two detour routes RA by thin lines 74A and 74B having a predetermined length from a point branched from the recommended route RR. Here, the system controller 20 sets the above-mentioned predetermined length to the length from the point where the detour route RA branches from the recommended route RR to the point where the next right / left turn should be made along the detour route RA. . Here, the detour route RA corresponding to the thin line 74A is a route from the road 81 to the destination where the total cost is minimum when the intersection of the road 81 and the road 83 is turned to the right. It is the route that goes to in order. The detour route RA corresponding to the thin line 74B is a route from the road 81 to the road 84, the road 85, and the road 82, when the intersection of the road 81 and the road 84 is turned to the right. It is a route that passes in order. The detour route RA corresponding to the thin line 74A and the thin line 74B is a route having the same total cost as the recommended route RR corresponding to the thick line 73.

  Then, the system controller 20 displays the recommended route RR by the thick line 73 that is most easily visible, and displays the detour route RA by the thin lines 74A and 74B that are less conspicuous than the recommended route RR, by the entrance portion. Here, the system controller 20 displays, from the recommended route RR, the point where the detour route RA branches from the recommended route RR to the point where the next turn should be made by thin lines 74A and 74B.

  As described above, the system controller 20 displays the bypass route RA only at the entrance portion, and displays the bypass route RA more narrowly than the recommended route RR, thereby suppressing the display from becoming complicated, and the bypass route RA. The driver can easily grasp the presence of RA. Therefore, the system controller 20 can improve user convenience.

  Here, the effect by the display mode shown in FIG. 2 is demonstrated concretely. For example, when the red light portion of the traffic light of the traffic light mark 71 is turned on and the arrow signal is turned off while the vehicle is traveling at the position of the own vehicle position mark 70, the driver refers to the screen shown in FIG. It is understood that there is a detour route RA indicated by a thin line 74A that does not pass through the traffic light. Therefore, in this case, the driver can drive the vehicle so as to make a right turn from the road 81 to the road 83, thereby preventing the signal waiting at the traffic light of the traffic light mark 71 and arriving at the destination early. .

  In another example, if the red light portion of the traffic light of the traffic light mark 71 is lit and the right arrow signal is lit while the vehicle is traveling at the position of the own vehicle position mark 70, the driver is shown in FIG. Referring to the screen, it is understood that there is a detour route RA indicated by a thin line 74B that turns right at the traffic light. Therefore, even in this case, the driver can drive the vehicle so as to turn right from the road 81 to the road 84 to prevent waiting for a signal at the traffic light of the traffic light mark 71 and arrive at the destination early. Is possible.

  FIG. 3 shows a display screen of the display 44 after the vehicle turns right from the road 81 to the road 84 according to the detour route RA indicated by the thin line 74A of FIG.

  As shown in FIG. 3, in this case, the system controller 20 sets the detour route RA indicated by the thin line 74B in FIG. 2 as the recommended route RR and displays it with the thick line 73A. Further, the system controller 20 erases the display of the thick line 73 indicating the recommended route RR in FIG. Further, the system controller 20 displays the detour route RA for the newly set recommended route RR with a thin line 76. Here, the detour route RA corresponding to the thin line 76 is a route to the destination where the total cost is minimum when going straight through the intersection of the road 84 and the road 85, and a left turn from the road 84 to the road 86. .

  Thus, when the vehicle enters the detour route RA from the recommended route RR, the system controller 20 sets the detour route RA as the recommended route RR and displays it in a conspicuous manner. As a result, the driver can arrive at the destination without hesitation even when the vehicle is driven so as to enter the detour route RA.

  In the example shown in FIGS. 2 and 3, the case where the destination is close to the current location is described, and the destination mark 72 indicating the destination is displayed on the displayed map. However, the display mode to which the present invention is applicable is not limited to this, and the destination may not be displayed on the map. Further, the scale of the map may be any scale designated by the user. Even in this case, the system controller 20 displays the entrance portion of the detour route RA by a predetermined length, and displays the detour route RA more narrowly than the recommended route RR, thereby complicating the display. The driver can easily grasp the existence of the detour route RA. Thereby, the system controller 20 can improve a user's convenience like the display example of FIG.2 and FIG.3.

(2) Method for Determining Detour Route RA Next, a method for determining the detour route RA will be described in detail.

  The system controller 20 determines a route to the destination having a total cost equivalent to the recommended route RR as the detour route RA. Specifically, the system controller 20 determines, as a bypass route RA, a route that has a total cost within a predetermined difference from the recommended route RR among the routes to the destination. Here, the predetermined difference is set to a difference determined to be substantially equal to the total cost of the recommended route RR. For example, the predetermined difference is set to a value corresponding to a predetermined ratio (for example, 1% to 15%) of the total cost with respect to the recommended route RR.

  Here, the timing for specifying the detour route RA will be specifically described.

  In the first example, the system controller 20 calculates, for each branch road of the recommended route RR existing within the map display range, the total cost of the route including the branch road. Then, the system controller 20 determines whether each of the routes having the minimum total cost corresponds to the detour route RA. Therefore, in this case, every time the branch road of the recommended route RR is displayed in the map display area, the system controller 20 calculates the total cost for the route including the branch road, and the total cost of the recommended route RR. And a route having a total cost within a predetermined difference is determined as a bypass route RA. As a result, the system controller 20 suppresses unnecessary calculation of the total cost of the route that branches off from the recommended route RR outside the map display target. Then, the system controller 20 displays the specified detour route RA in a manner that is less conspicuous than the recommended route RR, as in the display examples of FIGS. 2 and 3.

  In the second example, when the recommended route RR is determined, the system controller 20 determines whether each of the branch roads of the recommended route RR can be a road constituting the detour route RA. In this case, the system controller 20 calculates a route having a minimum total cost when passing through the above-described branch road, and determines a route having a total cost within a predetermined difference from the total cost of the recommended route RR as a detour route RA. Determine as Then, when the branch road of the recommended route RR constituting the detour route RA is displayed on the map, the system controller 20 makes the detour route RA more conspicuous than the recommended route RR as in the display examples of FIGS. Display in a manner that is not.

[Modification]
Hereinafter, each modification of the embodiment will be described. These modifications may be applied in combination to the above-described embodiments.

(Modification 1)
In the description of FIG. 2, the system controller 20 displays all the detour routes RA existing on the map. However, the display method of the detour route RA to which the present invention is applicable is not limited to this. A specific example will be described with reference to FIGS.

  FIG. 4 shows a first display screen example according to this modification. In FIG. 4, the system controller 20 displays only the detour route RA that branches off from the recommended route RR at an intersection with a traffic light by a thin line 74B. That is, in the display screen shown in FIG. 4, as compared with the display screen shown in FIG. 2, the detour route RA that branches from the recommended route RR at the intersection where there is no traffic light is not displayed.

  Thus, the system controller 20 displays the bypass route RA only when there is a traffic light at a point where the bypass route RA branches from the recommended route RR. By doing in this way, the system controller 20 is suitable for a driver | operator whether it may advance to the direction which the said arrow signal may show, when the arrow signal is lighting at the intersection ahead of a vehicle. Can be recognized. Further, the system controller 20 can avoid complication of display due to displaying an unnecessarily many detour routes RA on the map screen.

  FIG. 5 shows a second display screen example according to this modification. On the display screen shown in FIG. 5, the system controller 20 displays only the detour route RA including the road that branches off from the recommended route RR at the intersection closest to the own vehicle position by the thin line 74A. By doing in this way, the system controller 20 can display the detour route RA only for the intersection that passes most recently, and avoid complicated display.

  In yet another example, the system controller 20 is not limited to the detour route RA that branches at the most recently intersecting intersection, but of the detour route RA, the detour route RA that branches from the recommended route RR at the closest point from the vehicle position. It may be displayed. In yet another example, the system controller 20 may display only the detour route RA including the road that branches off from the recommended route RR at the first to predetermined intersections from the vehicle position on the map screen.

(Modification 2)
In addition to the processing of the embodiment, the system controller 20 may detect the state of the traffic signal ahead and change the display mode of the detour route RA based on the detected signal state.

  For example, in this case, the navigation device 1 is electrically connected to a camera that captures the front of the vehicle, and detects whether or not the traffic light and each signal lamp are lit based on an image generated by the camera. Then, when the system controller 20 determines that the direction different from the direction of the recommended route RR can pass based on the detected signal state, and the direction that can be passed indicates the direction of the detour route RA, The detour route RA is highlighted. In this case, the system controller 20 may display only the corresponding bypass route RA and hide the other bypass route RA, or may display the corresponding bypass route RA more conspicuously than the other bypass routes RA. Also good.

  By doing in this way, the system controller 20 can make a driver | operator recognize actively the detour route RA which can pass according to the state of a traffic light, and can suppress unnecessary signal waiting.

(Modification 3)
In the display screen examples shown in FIGS. 2 and 3, the system controller 20 displays the detour route RA from the branch point with the recommended route RR to the next right or left turn point of the detour route RA. However, the display mode of the detour route RA is not limited to this.

  FIG. 6 shows a screen display example of the display 44 according to this modification. As shown in FIG. 6, in this case, the thin lines 74Ax and 74Bx indicating the detour route RA have a predetermined length shorter than the length from the branch point between the recommended route RR and the detour route RA to the next intersection. For example, when the user looks at the map screen, the above-described predetermined length is determined in advance based on an experiment or the like so that the presence of the detour route RA can be visually recognized.

  Even in the display mode illustrated in FIG. 6, the system controller 20 can suitably suppress the display from becoming complicated while allowing the user to appropriately recognize the presence of the detour route RA.

(Modification 4)
In the screen display examples shown in FIGS. 2 and 3, the system controller 20 displays the detour route RA narrower than the recommended route RR. Instead of this, or in addition to this, the system controller 20 may display the recommended route RR by a solid line and display the detour route RA by a broken line, for example. In another example, the system controller 20 may display the recommended route RR with a conspicuous color and display the detour route RA with an inconspicuous color. Even in these cases, the system controller 20 can preferably display the detour route RA in a mode that is less conspicuous than the recommended route RR, and can suppress complication of the display.

(Modification 5)
In the embodiment, the navigation device 1 displays the route display shown in FIG. Instead of this, the navigation device 1 may allow the user to visually recognize the route display according to the embodiment using the head-up display.

  FIG. 7 is a schematic configuration of the head-up display 100. As shown in FIG. 1, the head-up display 100 includes a light source unit 2 and a combiner 3. The head-up display 100 is mounted on a vehicle including a windshield 80, a ceiling portion 82, a bonnet 83, and a dashboard 84.

  The light source unit 2 is installed on the ceiling 82 in the passenger compartment via the support members 4a and 4b, and emits light constituting the route display image according to the embodiment toward the combiner 3. Specifically, the light source unit 2 generates an original image (real image) of the display image in the light source unit 2, and emits light constituting the image to the combiner 3, thereby allowing the driver to pass through the combiner 3. The virtual image “Iv” is visually recognized. In this case, the light source unit 2 generates the above-described real image by receiving, for example, an image corresponding to the route display according to the embodiment from the navigation device 1 (not shown).

  The combiner 3 projects the display image emitted from the light source unit 2 and reflects the display image to the driver's eye point “Pe” to display the display image as a virtual image Iv. And the combiner 3 has the support shaft part 7 installed in the ceiling part 82, and rotates the support shaft part 7 as a spindle. The combiner 3 is an example of the “optical member” in the present invention. The support shaft portion 7 is installed, for example, in the vicinity of a ceiling portion 82 in the vicinity of the upper end of the windshield 80, in other words, a position where a sun visor (not shown) for the driver is installed. The support shaft portion 7 may be installed instead of the above-described sun visor.

  With this configuration, the head-up display 100 can cause the user to visually recognize the route display according to the embodiment as the virtual image Iv.

  The head-up display 100 may generate an image corresponding to the route display according to the embodiment, instead of receiving an image corresponding to the route display according to the embodiment from the navigation device 1. In this case, the light source unit 2 includes map data, a GPS receiver, an autonomous positioning device, and the like, and calculates the recommended route RR and the detour route RA described in the embodiment.

  Further, the configuration of the head-up display to which the present invention is applicable is not limited to the head-up display 100 shown in FIG. Instead of the configuration shown in FIG. 7, the light source unit 2 may emit light to the windshield 80 and cause the driver to visually recognize the virtual image Iv based on the reflected light of the windshield 80. In this case, the head-up display does not have the combiner 3.

  Here, a specific display example according to the modified example 5 will be described with reference to FIG. FIG. 8 shows a display example of the head-up display 100 when the windshield 80 is observed from the driver's seat. In FIG. 8, it is assumed that the vehicle is traveling on the road 87 and the light emitted from the light source unit 2 is projected onto the projection area “AP” of the windshield 80.

  In the case of FIG. 8, the head-up display 100 highlights a recommended route RR that is a route that turns right from a road 87 to a road 89 at a certain intersection at a traffic light 90 by a line 73y, and also turns right from a road 87 to a road 88. A certain detour route RA is lightly displayed. Here, the head-up display 100 is such that the recommended route RR and the detour route RA are turned upside down in the projection area AP for each road, that is, in a state of being projected obliquely downward from the ground surface. it's shown.

  As described above, the head-up display 100 can cause the driver to appropriately grasp the detour route RA while suppressing the display from becoming complicated as in the embodiment.

(Modification 6)
The navigation device 1 is connected to a camera that captures a front landscape of the vehicle, and a recommended route RR and a detour route RA are superimposed on an image generated by the camera (also referred to as a “front landscape image If”). Also good.

  FIG. 9 shows a screen of the display 44 that displays a front landscape image If taken at the same position as FIG. In FIG. 9, the system controller 20 displays the recommended route RR and the detour route RA superimposed on the front landscape image If in the display area “AD”. Here, the recommended route RR is displayed by a line 73y drawn upside down in the display area AD with respect to the road display area 87f and the road display area 89f. Similarly, the detour route RA is displayed by a line 74y drawn upside down in the display area AD with respect to the road display area 88f.

  As described above, the navigation device 1 preferably provides the driver with the detour route RA while suppressing the display from becoming complicated, even in the case of performing the display using the front landscape image If. It can be grasped.

  The present invention is suitably applied to devices having a navigation function such as an in-vehicle navigation device, a PND (Portable / Personal Navigation Device), and a portable terminal.

DESCRIPTION OF SYMBOLS 1 Navigation apparatus 10 Self-supporting positioning apparatus 12 GPS receiver 20 System controller 22 CPU
36 Data storage unit 38 Communication device 40 Display unit 44 Display 60 Input device 100 Head-up display

Claims (12)

A display device that displays a guide route to a destination,
Display means for displaying a map;
Display control means for displaying a plurality of guide routes to the destination on the display means;
With
The display control means causes one of the plurality of guide routes to be displayed as a recommended route on the display means, and simultaneously displays other guide routes on the display means in a form that is less conspicuous than the recommended route. Characteristic display device.   The display device according to claim 1, wherein the display control unit causes the display unit to display another guide route branched from the recommended route by a predetermined length from the branch point.   When the mobile object to be guided enters the other guidance route, the display control means displays the other guidance route on the display means as a new recommended route, and displays the recommended route so far. The display device according to claim 1, wherein the display device is stopped.   The display control means causes the display means to display only another guide route that branches off from the recommended route at an intersection where a traffic signal exists, among the other guide routes. The display device according to one item.   The display control means is based on a link cost related to at least one of a fee, a distance, a road width, a fuel consumption, and a required time, and a total cost as a total value for each guide route of the link cost is within a predetermined difference. The display device according to claim 1, wherein a guide route is displayed on the display unit. It further comprises signal state detecting means for detecting the state of the traffic signal ahead,
The display according to any one of claims 1 to 5, wherein the display control means highlights another guide route that can proceed according to a state of the traffic light among the other guide routes. apparatus.   The display control means causes the display means to display only other guide routes that branch off at the intersection of the recommended route closest to the vehicle position among the other guide routes. The display device according to any one of the above. An optical member that allows a user to recognize a virtual image with reflected light; and
A light source that emits light for forming the virtual image to the optical member;
Display control means for causing the light source to emit light for forming a virtual image that is displayed by superimposing a plurality of guide routes to the destination on the front landscape; and
With
The display control means causes one of the plurality of guide routes to be displayed as a recommended route on the display means, and simultaneously displays other guide routes on the display means in a form that is less conspicuous than the recommended route. Features a head-up display. A display device that displays a guide route to a destination,
Display means for displaying an image generated by a camera that captures a forward landscape of a moving object;
Display control means for displaying a plurality of guidance routes to the destination superimposed on the image on the display means;
With
The display control means causes one of the plurality of guide routes to be displayed as a recommended route on the display means, and simultaneously displays other guide routes on the display means in a form that is less conspicuous than the recommended route. Characteristic display device. A control method executed by a display device having a display means for displaying a map and displaying a guide route to a destination,
A display control step of displaying a plurality of guide routes to the destination on the display means;
In the display control step, one of the plurality of guide routes is displayed on the display unit as a recommended route, and at the same time, another guide route is displayed on the display unit in a form that is less conspicuous than the recommended route. Characteristic control method. A program executed by a display device having a display means for displaying a map and displaying a guide route to a destination,
Causing the display device to function as display control means for displaying a plurality of guidance routes to the destination on the display means;
The display control means causes one of the plurality of guide routes to be displayed as a recommended route on the display means, and simultaneously displays other guide routes on the display means in a form that is less conspicuous than the recommended route. A featured program.   A storage medium storing the program according to claim 11.

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